[Varnish] #1826: 503 backend error after response with 204 without a body, varnish 4.1

[Varnish]

#1826: 503 backend error after response with 204 without a body, varnish 4.1
--------------------------+----------------------
 Reporter:  xrowkristina  |       Owner:
     Type:  defect        |      Status:  closed
 Priority:  high          |   Milestone:
Component:  build         |     Version:  4.1.0
 Severity:  normal        |  Resolution:  invalid
 Keywords:                |
--------------------------+----------------------

Comment (by Tom Anheyer):

 We have the same issue with piwik/piwik.php responses. Dirty workaround
 after migration from 3.0.7 to 4.1 for us is:

 {{{
 sub vcl_recv {
 …
         elsif ( req.http.host == "piwik.…" && req.url ~ "^/piwik\.php" ) {
                 …
                 return (pipe);
         }
 …
 }}}

-- 
Ticket URL: <https://www.varnish-cache.org/trac/ticket/1826#comment:6>
Varnish <https://varnish-cache.org/>
The Varnish HTTP Accelerator